Apparatus for drying bone-black.



No. 769,421. PATENTBD SEPT. 6, 1904.

' M. WBINRICH.

APPARATUS FOR DRYING BONE BLACK.

APPLICATION FILED JUNE 25, 1903. RENEWED FEB. 53, 1904.

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No. 769,421. PATENTED SEPT. 6, 1904. M. WBINRICH.

APPARATUS FOR DRYING BONE BL APPLICATION FILED JUNE 25. 1903. RENEWEDr}: e04.

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M. WEINRICH. APPARATUS FOR. DRYING BONE BLACK. APPLIUATION FILED mm: 25.1903. RENEWED FEB. 9, 1904.

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M. WEINRIGH. APPARATUS FOR DRYING BONE BLACK. APPLICATION FILED JUNE 25.1903. RENEWED FEB. 9, 1904. N0 MODEL V f w 1/ UNITED STATES PatentedSeptember 6, 1904.

APPARATUS FOR DRYlNG BONE-BLACK.

SPECIFICATION forming part of Letters Patent N0. 769,421, datedSeptember 6, 1904.

Application filed June 25, 1903. 'Renewed February 9, 1904. Seria No.192,848. K O odel-1 To all w/wm it may concern:

Be it known that l, Moi-LIZ \Vmxmon, a citizen of the United States,residing at Yonkers, in the county of lVestchester and State of NewYork, have invented new and useful Impror ements in Apparatus forDrying, Revivifying, and ll)ecarbonizing Bone-Black, of which thefollowing is a specification.

My invention relates to certain new and useful improvements in apparatusfor drying, for revivifying, and for decarbonizing bone-black and othermaterial; and it consists of the parts and the construction,arrangements, and combinations of parts which I will hereinafterdescribe and claim.

In the accompanying drawings, forming part of this specification, and inwhich similar characters of reference indicate like parts throughout theseveral figures, Figure 1 is a side elevation of the apparatusconstructed according to my invention. Fig. 2 is a cross-section of thesame on the line A B of Fig. 1. Fig. 3 is across-section on the line C Dof Fig. 1. Fig. a is a side elevation of the drum removed. Fig. 5 is anend view of the inlet end of the drum, partially broken away. Fig. 6 isan end view of the discharge end of the drum.

Fig. 7 is an enlarged vertical longitudinal section of the inlet end ofthe apparatus. Fig. 8 is a similar view of the driving or discharge endof the apparatus. Figs. 9 and 10 are half views of the back and frontends, respectively,

of the apparatus.

In my former United States Patent, No. 586,278, dated July 13, 1897, 1describe a process by which carbon or other organic matter and alsocertain inorganic matters can be removed from bone-black throughoxidation, and the apparatus hereinafter described, and illustrated inthe drawings, is designed for carrying out the aforesaid process andwill also be useful for other purposes and may be used for such otherpurposes without departing from the spirit of my invention.

As an essential part of the present invention I employ a revoluble drumA, which is shown detached in Fig. 1 and the construction of which isset forth in detail in Figs. 5, 6, T, and 8, said drum including twocastiron or east-steel head-pieces u and ('17, (shown particularly inFigs. '7 and 8,) said head a at the end of the drum to which thebone-black or other material is admitted being supported by and turnableupon suitable rollers 0' 0 supported by suitable stands if.

in Fig. 9 1 illustrate a half view of the back end of the apparatus, andin this view only the rollers and stand at one side of the verticalcenter of the drum are shown; but it will be understood that acorresponding set of rollers and a stand will be similarly positionedwith respect to the remaining half of this end of the apparatus, and inFig. 1 the stand of said second series of rollers and one of the rollersc of the second series are shown.

The head at the driving and discharge end of the drum rests upon andturns with a hollow shaft (1, which has an appropriate bearing in astand f, as shown in Figs. 1 and 8, said hollow shaft having fixed to itin any well-known manner, as by a key, a wormgear g which is engaged bya worm it, fixed to a shaft f, journaled at right angles to the drum andextending beyond the outer wall of the casing of the apparatusandprovided with fast and loose pulleys Z and Z designed to be suitablyconnected with some appropriate power, so that when set in motionthereby will revolve the shaft and cause the worm to revolve theworm-gear and drum.

Referring to liig. 1, it will be seen that the heads a and (1 areconnected by a number of stout angle-irons I I, &c., which are securelyriveted or otherwise rigidly fastened at the inside to a number ofannular angleirons m m m" to form a still and rigid framework, and on orbetween every two of the angle-irons l. &c., is riveted or bolted asubstantially U-shaped trough 12 12' a", &c., constructed, preferably,of steel, said troughs substantially radiating from the drum andimparting to said drum substantially a corrugated form, as shown inFigs. land The troughs are also riveted or bolted to the end heads I!"and a, substantially as shown in Figs. 7 and 8, and the head If at thedriving and discharge end of the drum is formed with a series ofopenings 1/ o 0, &c., Fig. 6, which serve as outlets ordischarge-orifices for the boneblack or other material which has beentreated during its progress through the apparatus.

By reference to Fig. 7 it will be seen that the head a at the inlet endof the drum has cast or otherwise fixed to its inside suitable wings p19 29 &c.. which are designed to engage and feed the bone-black or othermaterial forward and into the interior of the drum in the event of anytendency of the material accumulating in the head, thus producing apositive feed for said material.

In actual practice the drum may have a length of from twelve (12) feetto twenty-five (25) feet and a diameter of from three (3) feet to fivefeet, and said drum is preferably set at an incline of about one-halfinch to the foot to insure the desired passage of material therethrough.The head a is also inclosed by a hood B, and the head a is inclosed by ahood C, as shown in Figs. 1, 7, 8, 9, and 10, said hood B connectingwith a vapor and air pipe B, having a controlling-damper and having alength of approximately fifteen (15) feet. The hood B is provided with asliding or other shutter or gate 9, through which the interior of thedrum can be examined when occasion demands such inspection, and theaforesaid hood 0 is also provided with one or more sliding or othershutters or gates 8, Figs. 8 and 10, which are kept open during thetreatment of the material, so that a continuous draft of air ismaintained through the drum A and the vapor-pipe B. In addition to theforegoing the hood 0 has its lower part terminatingin a spout or chuteC, through which the treated bone-black or other material which hastraveled through the drum and which has passed through the outlets 0 0 0&c., is discharged into suitable receivers. (Not shown.)

The apparatus described is incased in appropriate brickwork or masonry(shown at F) and rests upon and is supported by a number of iron orsteel stands or legs D and metal beams E, which latter extend the lengthof the apparatus, as shown in Fig. 1. The brickwork or masonry casingsurrounds the entire drum and rests partly upon the beams E and partlyupon the angle-irons t and is held together by vertical buckstays G andconnecting-bolts a, Fig. 2. Cast-iron or other rings *0 o are securedinto the brickwork or masonry by means of bolts 10 and encircle theheads a and (0 so as to leave only a narrow annular space between therings and heads, whereby the outside air is kept out as much as possiblefrom the space between the drum and brickwork or masonry.

The apparatus is provided with a furnace H, which may be of anyappropriate type, said furnace being provided with doors w 20 and also agrate at 0, arranged under the feed or inlet end of the drum. At or nearthe discharge end of the drum and leading out through the upper sidethereof is the neck I of a suitable flue, and a suitable damper Y inthis neck or in the flue proper controls the discharge through the flue,said flue serving to carry off the waste heat and gases. If desired. thewaste gases may be drawn off through the bottom of the brickwork ormasonry, in which event a flue-neck K, Figs. 1 and 2, may be used andprovided with any well-known form of damper or slide-gate 2O forcontrolling the outlet of the gases.

The operation of the hereinbefore-described apparatus is substantiallyas follows: The drum A is rotated by the power conveyed throughthe fastpulley it" and the worm h and worm-gear g and the speed regulated in anywell-known manner, so that the drum will make about one revolution intwo minutes.

A fire started in the furnace H is slowly in.

creased, but not enough to make the troughs a of, 620., red hot. Afterabout two hours the drum is heated sufficiently to begin the operationof treating the bone-black or material, and said bone-black is allowedto enter the inlet end of the drum through the spout r in a practicallycontinuous stream, the feed of which may be regulated by any well-knownand suitable feeding device. As the material enters the hot drum it isheated up at once and alternately lifted and allowed to drop by thetroughs, which,in fact,

serve as buckets for the purpose. The shutter or air-vent s in the hoodG at the discharge end of the drum and the damper'of the vapor and airpipe B are opened as soon as the operation of feeding the bone-blackbegins, so that a continuous current of air is created in the drum. Inthe event of the bone-black or material containing some moisture thiswill be liberated from the heated material and will escape as vapor withthe current of air through the pipe or flue B. During the revolution ofthe inclined drum the bone-black will be advanced slowly toward thedischarge end of the drum, being alternately lifted and allowed to drop,as before explained, and during its passage through the drum saidmaterial will be heated up to the desired temperature and exposedsimultaneously tothe current of air, which may be regulated by openingthe airvent s more or less.

During its progress through the drum the bone-black will be freed firstfrom all its moisture and then through oxidation from the organicimpurities taken up by the last use of it, and also, if desired, fromany excess of carbon, as set forth more fully in my aforesaid formerpatent, No. 586,278. The revivified bone-black is discharged through theopenings 0 0 &c., in the head a into the spout O, which will in turndeliver it into some suitable cooling device, whereupon it is againready for use.

The described apparatus may be used also with the same advantage in therevivification of other filtering material than bone-black,

(Not shown.)

especially in that of fullers earth and of infusorial earth; also, forsimply drying other materials-f0r instance, coal, ore, sand, beet-pulp,brewers grains, &c.

Among the advantages which can be asscribed to thehereinbefore-described apparatus may be noted the following:

First. The drum being composed of substantially U-shaped troughs offersfully double the heating-surface that is obtained by a smooth-surfacedcylinder, whereby more material can be treated in such a drum withoutheating the drum to a higher temperature than when using a smooth drum.

Second. There are no rivets exposed to the fire or to the heating-gases.

Third. As soon as one of the troughs becomes deteriorated it can bequickly replaced by a new one with comparatively little trouble andexpense.

Fourth. By placing the furnace beneath the feed end of the drum, wherethe material is the coolest,the inflowing material will take up heatmore readily and will prevent the troughs becoming too hot above thefire. In this way the whole drum will be kept at substantially a uniformand moderate temperature and its life will be greatly prolonged.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an apparatus of the character described, a revoluble drumcomprising two head-pieces and a series of independent, U- shapedtroughs extending between said headpieces, and independently andremovably secured thereto.

2. An apparatus for drying and for revivifying and decarbonizingbone-black and other material including a revoluble drum and end headstherefor, and means connecting said heads, said drum having an annularseries of independently-detachable substantially U- shaped troughsconnecting with the interior of the drum and imparting to the exteriorthereof a substantially corrugated form.

3. An apparatus for drying, for revivifying and decarbonizing bone-blackand other material having, in combination, a revoluble drum consistingof two head-pieces; an angleiron framework connecting the same; and aseries of independent, substantially U-shaped troughs fixed to saidframework and forming, with said head-pieces, a closed drum ofsubstantially corrugated shape.

i. An apparatus for drying and for revivifying and decarbonizingbone-black, and other material, comprising a revoluble drum composed oftwo head-pieces, a connecting framework, and a series of independent,substantially U-shaped troughs connected to said framework and forming,with the head-pieces, a closed drum of corrugated shape; a hoodinclosing the feed end of the drum, and provided with an air-pipe; ahood inclosing the discharge end of said drum, and provided with anair-vent; and a furnace located beneath the feed end of the drum.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

MORIZ WEIN RICH.

\Vitnesses:

JAMES S. Frrcn, M. F. \Vmnurou.

